Huawei SRG3300 Digital Signature Verification signature verification

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.

A vulnerability classified as critical has been found in Huawei AR1200, AR1200-S, AR150, AR160, AR200, AR2200, AR2200-S, AR3200, SRG1300, SRG2300 and SRG3300. Affected is an unknown function of the component Digital Signature Verification. The manipulation as part of a Digital Signature leads to a weak authentication vulnerability. CWE is classifying the issue as CWE-347. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

There is a digital signature verification bypass vulnerability in AR1200, AR1200-S, AR150, AR160, AR200, AR2200, AR2200-S, AR3200, SRG1300, SRG2300 and SRG3300 Huawei routers. The vulnerability is due to the affected software improperly verifying digital signatures for the software image in the affected device. A local attacker with high privilege may exploit the vulnerability to bypass integrity checks for software images and install a malicious software image on the affected device.

The bug was discovered 03/20/2019. The weakness was shared 06/04/2019 (Website). The advisory is available at This vulnerability is traded as CVE-2019-5300 since 01/04/2019. Local access is required to approach this attack. The successful exploitation requires a authentication. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 06/19/2020).

The vulnerability was handled as a non-public zero-day exploit for at least 76 days. During that time the estimated underground price was around $5k-$25k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.




CPE 2.3infoedit

CPE 2.2infoedit


VulDB Meta Base Score: 6.7
VulDB Meta Temp Score: 6.7

VulDB Base Score: 6.7
VulDB Temp Score: 6.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.7
NVD Vector: 🔍



VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍


Class: Weak authentication
CWE: CWE-347
ATT&CK: Unknown

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔍


Threat Intelligenceinfoedit

Threat: 🔍
Adversaries: 🔍
Geopolitics: 🔍
Economy: 🔍
Predictions: 🔍
Remediation: 🔍


Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍


01/04/2019 🔍
03/20/2019 +75 days 🔍
06/04/2019 +76 days 🔍
06/05/2019 +1 days 🔍
06/19/2020 +380 days 🔍



Status: Not defined
Confirmation: 🔍

CVE: CVE-2019-5300 (🔍)
OSVDB: - Multiple Huawei routers security bypass


Created: 06/05/2019 09:15 AM
Updated: 06/19/2020 11:58 AM
Changes: (1) advisory_confirm_url
Complete: 🔍


No comments yet. Please log in to comment.

Do you want to use VulDB in your project?

Use the official API to access entries easily!